gräfix 70
Thermal insulation plaster
CS I - with polystyrene
gräfix 70 is applied as a base render to the render base/masonry prepared with gräfix 63 SB. An insulating plaster base can be dispensed with up to a thickness of 60 mm. The thermal insulation plaster can then either be coated directly with gräfix 601 scratch coat or with a levelling layer of gräfix 71 lite and a thin layer of finishing plaster.
Delivery: "75 litres" approx. 14 kg / bag
Thermal transmittance: K = 0.95 W/m2K
WLG: 070
- Standard plaster mortar according to DIN EN 998-1
- for interior and exterior use
- Compressive strength CS I
- Grain size 0 - 1.0 mm
- Thermal conductivity λ 0.07 W/(mK)
- Building material class B1
- Approx. 58 litres of fresh mortar
- Processing time approx. 2 - 3 hours
- Delivery in 75 litre paper bag (approx. 14 kg)
- Insulation and equalisation in one
- ecological/biological
- highly alkaline
- Can be applied by hand with a plastering machine
- very good machine workability
- ideal for uneven interior and exterior walls
- Remove coatings that restrict adhesion
- Prepare the plaster base with gräfix 63 SB as a bonding bridge
- Mix one bag of gräfix 70 with approx. 13 litres of water
- can be applied with a plastering machine and post-mixer
- a Welnet insulating plaster base is recommended for plaster thicknesses over 60 mm
- must be applied in several layers
- Plaster thickness: per layer from 10 to max. 30 mm
- Yield: with 40 mm plaster thickness approx. 102 m² per tonne or 1.4 m²/bag
- Observe technical data sheet!
Thermal insulation plaster
Insulation and levelling in one
An alternative in listed renovation projects, as insulation in interior areas and as substrate levelling for large unevenness.
Thermal insulation plaster has fallen behind insulation boards due to its poorer insulating properties. Nevertheless, insulating plaster should still be used, especially in renovation projects. The substrate situation in old buildings, e.g. with quarry stone masonry, is also not easy to solve, but can be easily levelled out with a thermal insulation plaster.
